Numerical modelling of flow around coastal structures and scour prediction

The nearshore circulation and the wave characteristics are important parame ters, which control coastline morphology. The interaction of nearshore. cir culation with coastal structures, modify the wave characteristics and seabe d topography, often resulting in scour near the foundation of the structure s. This paper deals with the numerical prediction of nearshore circulation induced due to wave setup in the nearshore region with and without the stru cture [(i) structure resting on seabed (ii) structure raised above the seab ed]. It is also helps understand the deficiencies in studying the coastal c haracteristics by describing the flow field due to the wave velocity potent ial alone. Comparison of the results of both nearshore circulation and the wave potential model are discussed and the importance of the study and its prototype applications are highlighted. (C) 2001 Elsevier Science Ltd. All rights reserved.